At baseball-reference.com they've introduced spring stats this year and they have a rudimentary little tool that shows the level of competition the player has been facing. Not perfect, but it helps balance out the bias a little.

As for stats themselves, they don't matter much for guys who are assured a spot on the Opening Day roster, as this is a time to get ready for the season, work on some stuff, etc. I think Peavy said yesterday in his start against San Diego when he allowed 3 runs in 3 innings, he was working on his fastball so he threw that pitch almost exclusively. But for guys fighting for the last roster spot, I think there is some minor importance to them, but like a lot of baseball, a lot depends on the eye test, as well.

That sort of illustrates how meaningless sping training stats are. If you're a veteran pitcher assured of your role with the team, you may be working on a new pitch or, in the case of some pitchers, saving some of your best stuff for the regular season because it puts additional cumulative strain on your arm and you may want to save that for when it counts.

Veteran position players may take different approaches to their hitting in the spring than they do during the regular season. Sometimes, the better your competition, the less they are competing. Sometimes the players with the biggest incentives to have the best stats to make the team are better than higher-paid players in front of them. Sometimes they perform better because they are the only ones playing for something. The stats tell you nothing that that eye test doesn't.